A Study of the Structural, Optical and Antibacterial Properties of Green Synthesized Calcium Oxide Nanoparticles

Green synthesis of nanoparticles has attracted great interest in recent years because it offers a cost effective and environment friendly method for the synthesis of nanoparticles. Calcium oxide (CaO) nanoparticles have potential applications in catalysis, wastewater treatment and biomedicine. In the present study, CaO nanoparticles are synthesized by an eco-friendly green synthesis via thermal decomposition of eggshells which is a common waste material from households and restaurants. The synthesized nanoparticles were subjected to characterization using X-ray diffractogram (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared (FTIR) spectroscopy, photoluminescence (PL) spectroscopy and UV-vis spectroscopy. The structural studies confirmed the formation of cubic, crystalline and irregularly shaped nanoparticles. FTIR and EDX spectroscopy indicated intensive peaks attributed to the presence of calcium and oxygen